diff --git a/pkgs/development/libraries/libunique/default.nix b/pkgs/development/libraries/libunique/default.nix
index 2bb53dd2b97..8559731d707 100644
--- a/pkgs/development/libraries/libunique/default.nix
+++ b/pkgs/development/libraries/libunique/default.nix
@@ -7,6 +7,8 @@ stdenv.mkDerivation rec {
     sha256 = "1fsgvmncd9caw552lyfg8swmsd6bh4ijjsph69bwacwfxwf09j75";
   };
 
+  NIX_CFLAGS_COMPILE = "-Wno-error=deprecated-declarations";
+
   # patches from Gentoo portage
   patches = [
     ./1.1.6-compiler-warnings.patch